Method of printing



May 26, 1936. F. J. JEUQK 2 32 METHOD OF PRINTING Filed Dec. 27,- 1935 INVENTOR ATTORNEY Patented M...) 26, 1936 2,042,432

m-zrnon or ranwrmc Francis Jack Jeuck, Battle Creek, Mich., assignor to The International Printing Ink Corporation, New York, N. Y., a corporation of Ohio Application December 21, 1935, Serial No. 56,303-

8 Claims. (01. 101-416) This invention relates to a method of printing drawing, the ink solvent remains liquid in the and more particularly to a method of setting press which is operated at ordinary room temink on printed material. perature (20 to 25 C.) so that substantially no My method contemplates the use of anink condrying of the ink occurs on the rollers or plates taining a solvent whose vapors are inflammable of the press. As the web passes over the heated and includes the step of igniting and completely roll, it israised to a temperature at which the or partially burning the vapor of the solvent in solvent vaporizes rapidly. Solvent vapor, therethe ink after the ink has been printed on paper fore, rises from the web at and beyond the heat or other material. The method has the advanroll and the air overlying the web becomes mixed 10' tage of causing a more rapid setting of ink than with the vapor. The vapor is ignited by the gas 10 has heretofore been obtainable, and also of flames from the burners A-, and being mixed with chemically destroying thesolvent. in the ink so air the vapor burns very rapidly or flashes. that it cannot resoften the ink after it has been The vapor flashes so rapidly that the flame of set. Furthermore, I have discovered that ignithe burning vapor extends only a short distance tion and burning of the ink vapor may be carried along the web. Any flame which may extend as 15 out without scorching or burning combustible far as the rewind roll is snufiedout as the web material such as paper to which the ink has been is wound up on this roll. applied. An important and unexpected feature of this In the accompanying drawing, I have shown process is that the web "of paper is not burned diagrammatically an apparatus which may be or scorched although the temperature of the UNITED STATES PATENT OFFICE,

20 7 used for carrying out my method. To more burning vapor is obviously high enough to scorch fully explain the nature of my invention, I will and burn paper. Without binding myself to any describe a specific method embodying it which theory, I attribute this important result to themay be carried out by means of the apparatus great rapidity with which the vapor when mixed indicated in the drawing. with air bums or flashes. 25 The drawing shows diagrammatically a typo- While inks such as igifse to which I have regraphic printing press of any ordinary construcferred may be set by v atilization of the solvent tion in which one or more printing inks are aponly, I have found that my ignition method plied to a traveling web of paper, the usual reresults in a much more rapid setting than has 0 wind roll on which the printed web is wound after been heretofore obtainable. Thus, in the appa- 3 printing, and a steam-heated roll over which the ratus illustrated, the ink is perfectly set when the web passes between the press and the rewind roll. web travels at a high speed, such as 100 feet per T e in is applied by the press to the side of the minute. Furthermore, in my process the danger web which is uppermostas the web leaves the of resoftening the ink by condensation of the press, so that the back or unprinted side of the solvent vapor upon the printed matter is elimi- 5 web is in contact with the heated roll. Adjacent nated by the chemical destruction of the solvent to the web between the heat roll and the rewind involved in the combustion of the solvent vapor. roll is a row oi! Bunsen burners extending across' Complete combustion of all the solvent vapor the web and directing gas flames against the from the ink is'probably not obtained in my 40 printed side of the web. One of the Bunsen method; and I have ascertained that the success 40 burners is shown at A in the drawing. of the method is not dependent upon actually The ink used in my method, when applied to burning all the vapor, but requires only that the typographic printing, has a vehicle consisting vapor be ignited and that at least a part of it be wholly or in part of a colloid which serves as a flashed or burned.-

' thickener and binder dissolved in a solvent which My invention is not limited to use of the par- 45 is practically non-volatile at ordinary press room ticular sort of ink, nor to the particular type of temperatures (20 to 25 C.) and which is rapidly printing (typographic), which has been described converted into an inflammable vapor at the temin the specific method, but may be practiced adperature of steam or slightly superheated steam vantageously in the use of any ink containing a to 0.). Known inks; of this charvolatilizable liquid whose vapor is inflammable, 50

acter include those whose vehicles consist of lowwhether saidink be applied to a web or other viscosity nitrocellulose. dissolved in diethylene sort of sheet. glycol monobutyl'ether (butyl carbitol). What I claim is: Y

In carrying out my method with such an ink 1. In a method of printing which comprises 5 and with apparatus such as that indicated in the applying to a sheet a printing ink containing a 55 volatilizable liquid whose vapor is inflammable and thereafter vaporizing said liquid in the ink on the sheet, the step which consists in igniting the vapor of said liquid as it emerges from the ink on the sheet so that the vapor is at least partially burned in immediate proximity to the sheet.

2. The method of printing which comprises applying to a combustible sheet an ink containing a volatilizable and inflammable liquid, and thereafter volatilizing said liquid while the sheet is exposed to the air so that the vapor emerging from the ink on the sheet becomes mixed with the air overlying the sheet, and flashing said mixture in the immediate proximity of the sheet.

3. The method of setting a printing ink containing a volatile and combustible substance which comprises volatilizing, igniting and par-.

tially burning saidsubstance in the immediate proximity of the printed matte 4. The method of printing which comprises applying an ink containing a volatilizable, in-

- liquid, igniting the vapor emerging from the ing the vapor of partially burned in ink on the web, and snufllng out the flame by winding up the web.

6. In the method of applying to a sheet a contains a thickening agent dissolved in a volatilizable and inflammable solvent liquid which is stable at ordinary press room temperatures and thereafter vaporizing said solvent liquid in the ink on the sheet, the step which comprises ignitsaid solvent as it emerges from the ink on the sheet, so that the vapor is at least immediate proximity to the sheet.

7. The method of printing which comprises applying to a combustible sheet an ink whose printing which comprises vehicle containsa thickening agent dissolved in a volatilizable and inflammable solvent liquid which is stable at ordinary press room temperatures, and thereafter volatilizing said solvent liquid while the sheet is exposed to the air so that the vapor emerging from the ink on the sheet becomes mixed with the air overlying the sheet, and flashing said mixture.

8. The method of printing which comprises printing ink whose vehicle applying to a traveling web an ink whose vehicle 2 contains a thickening agent dissolved in a volav tilizable, inflammable solvent liquid which is stable at ordinary press room temperatures, heating the web at a point of its travel to volatilize said solvent liquid and igniting the vapor as it 30 emerges from the ink on the web.

FRANCIS JACK JEUCK. 

